Tensioning device for storm windows



Oct. 21, 1952 w. M. KRANTZ 2,614,297

TENSIONING DEVICE FOR STORM WINDOWS Filed June 29. 1949 I N V EN TOR.M/a/fer M Ara/n A T TOIP/VE X Patented Oct. 21, 1952 a I UNITED STATES?ATENT OFFICE I TENSIONING DEVICE FOBJSTORM WINDOWS WalterM Krantz,Ferndale, .Mich. Application. June 29, 19.4.9, Serial No. "101,980

aoiaims. (01. 20-55) This. invention relates tostorm windows and moreparticularly to combination storm windows wherein glazed and screenedsash are removably positioned in mounting frames which in turn are incommunication with said channel and means in said channel registeringwithsaid opening I01 yieldingly increasin the effective thickness of thesaid sash whereby the samemay be tightly fitted ina storm window frame.

A still further object of the invention is the provision of a storm sashhaving a, channel in the edge thereof and an opening in said sash incommunication with said channel and a ball in said channel in registrywith said opening and extending partially therethrough, and means in thesaid channel for yieldingly holding the said ball in the said openingwhereby the same may be tightly fitted in a storm window frame.

The storm sash tensioning means shown and described herein comprises asimple and efiicient device formed in combination with a storm sashhaving a longitudinally extending channel in the edges thereof forincreasing the effective width of the sash to enable the same to beself-supporting and self-sealing in a channeled frame in which it may bepositioned so that a weather-tight seal is obtained by the said sash andsaid frame.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spirit of theinvention.

The invention is illustrated in the accompanying drawing, wherein:

Figure l is a fragmentary view of a portion of a storm sash frame andsash therein.

Figure 2 is a vertical section on line 2-2 of Figure 1.

Figure 3 is a horizontal section on line 33 of Figure 2.

Figure is an enlarged detail of the tensicning means.

Figure 5. is a top plan View taken on line 5+5 of Figure 4.

By referring to the drawings andlrFi'gu'res 1, 2 and 3 in particular itwill be seen that a storm sash frame it) has been disclosed whichisadapted to be positioned inor on awindow opening and which has a pair ofspaced flanges 'I'I' and I2 thereon which define a channel 13. forthe-reception of a storm sash Hi which in turn has a channel it formedin its marginal edge. Thestorm sash M includes a panel of glazingmaterials It secured in the sash M, by metalv spline H as is customaryin the art or as shown in my Patent No. 2,505,553.. The twoperipherallyv extending flanges formedbysaid channel 15011, the edge ofthe sash l4. arereceived between 'saidj'flanges vI I and it. As appearsin the drawings, theflanges H and I? are so spaced that the sash isreceived snugly therebetweenfbut a slight'spacing is provided by whichbinding or seizing is positively prevented. Howeventhis spacing, whichis common in storm window practice, while necessary to prevent seizingor binding, normally permits leakage of air around the sash l4 and thuspartially defeats the purpose of the storm window since it detracts fromthe insulation value thereof.

The present invention relates to the forming of one or more openings 58in the sash and estab-' lishing communication with the channel l5therein and positioning a ball l9 partially through the opening 88 sothat a portion of the ball l9 extends beyond the plane of the sash l4and thereby increases the effective width of the sash M at this point. Aleaf spring 29 is positioned between the innermost portion of the ball59 and the part of the sash i l defining the other side of the channell5 so that it yieldably positions the ball IS in the opening H8. Theends of the leaf spring 20 are sharpened as at 2l--2l so that they diginto the material of the sash id and thereby locate the leaf spring 28with respect to the ball 19. As will be evident from the drawing, theball l9 will be of a diameter slightly larger than the diameter of theopening it and yet it is sufficiently small that it will extend throughsaid opening and slightly beyond the outer surface of the flange M inwhich the opening it? is located. The thickness of the flange I4 islikewise substantially less than onehalf the diameter of the ball inorder to make it possible for the ball to extend therethrough. The

spacing of the inner surfaces of the flanges l I and l 2 with respect tothe outer surfaces of the flanges I l is great enough to permit theready sliding of the flanges l4 between but is sumciently small that theball I9 will engage the flange II and will by it be pressed against thespring 20. Altemately, locating means may include the constructiondisclosed in Figure 5 of the drawings wherein a small opening 22 isformed in a leaf spring 23 to partially engage a ball 24. Either ofthese constructions will efficiently position the ball IS with respectto the opening [8 in the sash M. It will be obvious that when one ormore of these devices are positioned in the sash i4 and the sash l4moved into engagement in the channel l3 of the frame [0, the sash willbe securely and tightly positioned therein so as to insure aweather-tight closure with respect thereto.

It will be observed that the spring 20 holds the ball l9 firmly in theopening l8 so that the entire unit is self contained and will not comeapart even when the sash is removed from the supporting frame. This isof advantage in assembling the structure and is of particular advantagewherever one of these units is used on an end of a sash which will beremoved from the frame when the window is open.

It will thus be seen that the several objects of the invention are metby the tensioning device for storm windows disclosed herein.

Havin thus described my invention, what I claim is:

1. In a storm window sash adapted for support between a pair of spaced,parallel frame flanges, the combination comprising: a pair ofperipherally extending, spaced, parallel sash flanges adapted to bereceived between said frame flanges, and an opening through one of saidsash flanges; a leaf spring element engaging the other sash flange at apoint opposite said opening and having a portion thereof intermediateits ends positioned to intersect the projected axis of said opening; aball of diameter larger than the diameter of said opening but smallenough that it will extend through said opening and beyond the sashflange containing said opening, the thickness of said sash flange beingsubstantially less than onehalf the diameter of said ball; said leafspring being curved away from said other sash flange by such a distancethat it engages said ball and holds it against the edges defining saidopening.

2. In a storm window sash adapted for support between a pair of spaced,parallel frame flanges, the combination comprising: a pair ofperipherally extending, spaced, parallel sash flanges adapted to bereceived between said frame flanges, and an openin through one of saidsash flanges; a leaf spring element engaging the other sash flange at apoint opposite said opening and so positioned that its midpoint islocated on the projected axis of said opening; a ball of diameter largerthan the diameter of said opening but small enough that it will extendthrough said opening and beyond the sash flange containing said opening,the thickness of said sash flange being substantially less than one-halfthe diameter of said ball; said leaf spring being curved away from saidother sash flange by such a distance that it engages said ball and holdsit against the edges defining said opening.

WALTER M. KRANTZ.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 86,773 McHibbin Feb. 9, 1869638,617 Allen Dec. 5, 1899 967,746 Erickson Aug. 16, 1910 1,721,102Brandenburg July 16, 1929 2,551,051 Prondzinski et a1. May 1, 1951

